P2.1.3 Inkjet-printed graphene-PEDOT:PSS modified on screen printed carbon electrode for sensing applications
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P2.1 Biosensors
- Author(s)
- C. Sriprachuabbwonga, C. Karuwana, A. Wisitsorrata, D. Phokharatkula - Nanoelectronics and MEMS laboratory, National Electronics and Computer Technology Center (NECTEC) (Thailand), A. Tuantranont - Thailand Organic and Printed Electronics Innovation Center (TOPIC), National Science and Technology Development Agency (NSTDA) (Thailand), P. Sritongkham - Department of Biomedical Engineering, Faculty of Engineering, Mahidol University (Thailand)
- Pages
- 1336 - 1338
- DOI
- 10.5162/IMCS2012/P2.1.3
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
In this work, a novel method for electrode modification based on inkjet-printing of electrochemically synthesized graphene-PEDOT:PSS (GP-PEDOT:PSS) nanocomposite is reported for the first time. GP-PEDOT:PSS dispersed solution is prepared for use as an ink by one-step electrolytic exfoliation from a graphite electrode. GPPEDOT: PSS layers are then printed on screen printed carbon electrodes (SPCEs) by a commercial inkjet material printer and their electrochemical behaviors are characterized towards three most common electroactive analytes including hydrogen peroxide (H2O2), nicotinamide adenine dinucleotide (NAD+/NADH) and ferri/ferro cyanide (Fe(CN)63-/4-) redox couples. It is found that the oxidation signals for H2O2, NADH and K2Fe(CN)6 of PEDOT:PSS modified and GP-PEDOT:PSS modified SPCEs are ~2-4 and ~3-13 times higher than those of unmodified SPCE, respectively. In addition, excellent analytical features with relatively wide dynamic ranges, high sensitivities and low detection limits have been achieved. Therefore, the inkjet-printed GP-PEDOT:PSS electrode is a promising candidate for advanced electrochemical sensing applications.